CN1152243C - Preinstallation of a pressure sensor module - Google Patents
Preinstallation of a pressure sensor module Download PDFInfo
- Publication number
- CN1152243C CN1152243C CNB008134871A CN00813487A CN1152243C CN 1152243 C CN1152243 C CN 1152243C CN B008134871 A CNB008134871 A CN B008134871A CN 00813487 A CN00813487 A CN 00813487A CN 1152243 C CN1152243 C CN 1152243C
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- Prior art keywords
- pressure sensor
- sensor module
- circuit
- axle sleeve
- pressure
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- Expired - Lifetime
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0046—Fluidic connecting means using isolation membranes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0061—Electrical connection means
- G01L19/0084—Electrical connection means to the outside of the housing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0663—Flame protection; Flame barriers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/141—Monolithic housings, e.g. molded or one-piece housings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R29/00—Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A pressure sensor module and method for pre-installation without a converter module. The pressure sensor module is hermetically sealed and can remain undamaged in an installation environment without a converter module. The pressure sensor module can be assembled later with a converter module in the installation environment. The pressure sensor module includes an isolator, a pressure sensor and a circuit that provides a bus for energization, control and a digital pressure output. An integrally formed hermetic external support structure surrounds the pressure sensor and circuit. The hermetic external support structure has a threaded process fluid inlet around the isolator, and a threaded support sleeve supporting the feedthrough.
Description
Technical field
The present invention relates to industrial process systems; More particularly, relate to pressure unit used in the industrial process systems.
Background technology
By pressure sensor module and converter module are fitted together, pressure unit generally is installed in the factory or workshop condition that cleans and be controlled.The shell of above-mentioned two kinds of modules all has threaded syndeton, and electronic circuit can stretch out and be connected with other module thus.Above-mentioned two threaded syndetons are by being threaded togather, and each module all seals by the syndeton of it and other module, thereby form a complete pressure unit and provide protection to the electronic circuit of its inside.
But before module was assembled into together, the eroding chemical in that the electronic unit that exposes in the sensor assembly may contact, leak out because of human body or the environment or other environmental baseline were polluted and are damaged.In that some application places-when for example being applied in the chemical process system, the above-mentioned condition that parts are suffered damage is ever-present.Therefore, pressure unit is normally assembled in advance, and it is assembled earlier.This means that converter module should be assembled and finish before sensor assembly is installed to the process pipeline.Have now found that in many cases, wish before the design of transducer is selected and total system installs and precedingly is installed to pressure sensor module in the process pipeline and examines pressure.That is to say, wish that pressure sensor module can provide protection to electronic unit before converter module is installed.
Disclosed a kind of pressure transducer that has flame isolating plug among U.S. Pat-A-4 970 898.Pressure transducer comprises a dielectric film 35A, and one is exhausted, edge fluid passage 35B, and a pressure transducer 45, by the lead 57 of insulating material stationary positioned, circuit 20 and the terminal block 16 that has the terminal screw.Circuit 20 is arranged in circuit chamber 12, with O V-shaped ring 43 itself and surrounding environment is sealed." dorsal part " of pressure transducer 45 by cave in 50, hole 51, space 52, screw thread 24 and empty roller pin 30 be exposed in the surrounding space.
A kind of pressure transducer that has the High-Voltage Insulation fixation kit has been shown in patent WO 96 34264A.Lead 122, circuit 38 and terminal block 50 that pressure transducer comprises a dielectric film 26, dielectric fluid passage 28, pressure transducer 30 or 186, positions by insulating material.Circuit 38 is arranged in circuit chamber 146, is full of encapsulating material 144 in the chamber.Pressure transducer 30 or 186 is by encapsulating material 144 and O V-shaped ring 60 and external environment condition sealing.The 8th page of 22-24 capable described " metering ventilating system 151 guarantees that air directly combines with pressure transducer 30 " as WO 96 34264A.As shown in Figure 5, " dorsal part " of pressure transducer 186 is exposed in the surrounding air by passage 196,162.
Summary of the invention
The invention provides a kind of pressure sensor module, comprising: the transmitter of forming by isolator that is suitable for the reception process fluid and the pressure transducer that links to each other with described isolator; With the circuit that described pressure transducer links to each other and has bus, described bus can be used for leading to can, the numeral output of control and pressure etc.; Be suitable for being connected to the connecting line construction of selecting external module, described connecting line construction has the contact of the bus of being connected to and centers on the insulation system of described contact; And monolithic molding also centers on the shell of pressure transducer and circuit, described shell has the threaded process liquids inlet that forms sealing with isolator, and be used for connecting line construction is formed the threaded axle sleeve that supports, described axle sleeve is suitable for supporting the selection external module, and the wall of described become attached to structure and contact and described axle sleeve forms sealing, described axle sleeve and described shell monolithic molding.
Seal between shell and isolator and the connecting line construction, just can touch wherein pressure transducer and circuit to prevent to use common instrument.Like this, even it is strict inadequately in operating conditions, exist under the situation of chemical spill and steam, pressure sensor module also can carry out safe operation, installation and preservation in the installation environment of procedures system before converter module is unkitted, make that the electronic unit in the sensor assembly can not be exposed among the environment.
Description of drawings
Fig. 1 is the structural drawing of pressure sensor module first embodiment of the present invention.
Fig. 2 is the cut-open view of threaded process fluid inlet first embodiment of the present invention.
Fig. 3 is the end view of threaded process fluid inlet first embodiment of the present invention.
Fig. 4 is the cut-open view of threaded process fluid inlet second embodiment of the present invention.
Fig. 5 is the end view of threaded process fluid inlet second embodiment of the present invention.
Fig. 6 is the ground loop figure of pressure converter.
Fig. 7 is the structural drawing of electric insulation layer first embodiment of the present invention.
Fig. 7 A is the equivalent circuit diagram of electric insulation layer shown in Figure 7.
Fig. 8 is the structural drawing of electric insulation layer second embodiment of the present invention.
Fig. 9 is the cut-open view of electric insulation layer the 3rd embodiment of the present invention.
Figure 10 is the phantom view of pressure sensor module second embodiment of the present invention.
Figure 11 is the structural drawing that has pressure sensor module the 3rd embodiment of a process fluid inlet.
Figure 12 A-12C is respectively cut-open view, end face and the lateral plan that wherein comprises insulation connecting line construction capillaceous.
Embodiment
As shown in Figure 1, improved pressure sensor module shell has integrally formed threaded process fluid inlet and integrally formed threaded axle sleeve or the support shell that is used to support connecting line construction.Described axle sleeve also provides support converter module.In described pressure sensor module, body seal surrounds sensor and electronic unit, and it can independently be installed at the scene, need not load onto converter module earlier, and can guarantee that the electronic unit of pressure transducer is not exposed among the abominable on-the-spot air.Even under the also non-existent situation of converter module, also can at the commitment that procedures system is built process fluid conduit be coupled together and carry out pressure check with improved pressure sensor module.In procedures system was built, improved pressure sensor module can be deposited the long period out of doors or in the site environment, and the electronic unit in sensor or the pressure sensor module is suffered damage.In the later stage that procedures system is built, select and install converter module again to constitute complete pressure unit.
Fig. 1 is the have a style of one's own cut-open view of pressure sensor module 50 of encapsulation of the present invention.Module 50 comprises the shell of a sealing or the based on external supporting structure 72 of sealing, and described shell 72 has the inner chamber 71 of sealing, and Pressure isolator 54 is positioned at an end of described inner chamber and it is sealed.Pressure isolator 54 comprises the diapire 55 that an outer wall with shell 72 is connected and seals.Isolator wall 55 has the small cross sections passage 80 that is covered with isolation diaphragm 78 above, and with isolator wall 55 sealings, the pressure that fluid is acted on the diaphragm 78 can be delivered to pressure transducer 58 by described passage or pipeline 80 to isolation diaphragm 78 along its periphery.Pressure transducer 58 is installed in the inner chamber 71 of sealing.Pressure transducer 58 and isolator 54 constitute the transmitter 52 shown in the dotted line among the figure.One end of shell 72 has the process fluid inlet 56 of band internal thread 74, can be connected with process fluid conduit or pressure process pipeline.Hydrodynamic pressure at inlet makes diaphragm 78 produce distortion, and pressure transducer 58 carries out sensing to this pressure.
The external thread of axle sleeve 76 is used for accepting and supporting converter module 79, comprises circuit blocks such as D/A converter in the converter module 79, and they link to each other with circuit 60 with bus 64 by contact or contact pilotage 68.Comprise each the bar lead that links to each other with corresponding contact pilotage 68 in the bus 64.
The insulated enclosure plate 70 that supports contact pilotage 68 constitutes connecting line construction 66, is used for circuit 60 is carried out inside and outside electrical signal transfer, for example transmits required electric signal such as energy supply, control and pressure on the number expression.Circuit 60 is preferably only supplied with limited energy to pressure transducer 58, so that pressure transducer 58 trouble free services and prevent that isolation diaphragm 78 from causing the ignition of process fluid when breaking.
The module 50 that comprises sensor and circuit is pre-assembled.Process sealing between isolator wall 55 and the outer shell outer wall 86, seal pad 70 makes inner chamber 71 sealings simultaneously, thereby can make sensor 50, circuit 60 and other parts in the inner chamber avoid the influence of harmful steam and liquid, also can make the electronic unit of forming circuit 60 avoid infringement in operation.
The structure of module 50 makes and is difficult to use general jack board to open it; when it being installed in advance in the process pipeline or the screw thread 74 of its helicitic texture and fluid intake 56 is linked up; even when not having converter module or link block to be installed on the axle sleeve 76, it also can protect sensor 58 and circuit 60 to avoid the influence of abominable process environment.When needed, axle sleeve 76 can cover the connection contact that connects contact pilotage 68 with protection with structures such as piston cap, for example can adopt that New York BuffaloProtective Closures Co. company produces CAPLUG block or plunger.Even when not having other any parts to be installed on the shell, the isolator 54 that comprises isolation diaphragm 78 also can just can pressurize and stop leakage in the roof in the initial stage of fluid process systems construction or dismounting playing sealing function with inlet 56 process fluid conduit that link to each other, making to process pipeline and container.At this, before pressing, inspection do not need selected converter module and definite The whole control system that will be installed on the pressure sensor module.
The shell or the inner chamber 71 of supporting construction 72 available metal made so that a sealing to be provided of sealing, abutment joint or tie point can adopt welding technology welding, thereby make the module 50 can not be because of not paying attention to etc. former thereby opening.
Passage or pipeline 80 are preferably elongate structure, to satisfy the fire prevention or the extinguishment requirement of existing harmful place safety standard defined.Diaphragm 78 is known isolation diaphragm, and it links to each other with sensor 58 by the incompressible fluid that is full of flame proof passageway 80 and diaphragm lower area.If the fluid in the isolator runs off, passage 80 can keep fire prevention to isolate between the inner chamber of process fluid and pressure transducer 58.Flame proof passageway 80 in the shell 72 can be processed by spark-erosion machine tool, has made to form capillary type.
The length of the shell 72 shown in the four-headed arrow 82 heat insulation distance 84 is as required selected, make circuit 60 and the converter module appropriate intervals configuration that comprises pressure transducer 58 and isolator 54 shown in the dotted line 52, make when needed can heat insulation at interval in the filling thermal insulation material.Like this, the operating ambient temperature of circuit 60 can be different from the environment temperature of sensor 58.Thermal insulation material can be nitrogen, fiber or foamed insulation material and other known thermal insulation material of air, drying.Shell 72 has and is roughly columnar cross section between inlet 56 and axle sleeve 76, here cylindrical shape refers to the shape of its outside surface, be that it is formed around a fixing straight line parallel rotation by a line segment, this comprises the right angle cylinderical surface and the cylinderical surface of broad sense more.Cylindrical in cross-section provides support axle sleeve 76, and will act on the screw thread 74 that load on the axle sleeve is delivered to inlet 56.
Threaded inlet 56 will have sufficient intensity, to provide mechanical support to pressure sensor module 50 and with its binding and the converter module 79 that supported by axle sleeve 76.
Fig. 2 and Fig. 3 show an isolator modification that comprises differential pressure input 90, and it comprises two isolation diaphragms 92 that are configured in the bolt hole 94.Inlet 90 links to each other with a coplanar process fluid flange that is installed in the process pipeline.Process fluid coplane flange can be Rosemount company applied standard coplane flange in its 3051 type pressure unit, also can be the coplane flange with reduced size, depends on the size of isolator used chaff 92.As required, pressure manifold, tapping valve and heat tracing etc. can be included among the coplane flange that links to each other with the process pipeline, also can be included among the inlet 90.For satisfying the industrial standard of environmental protection, also can adopt double-entry structure.Also can consider to adopt the threaded inlet that is connected by bolt nut and pressure flange.
Fig. 4 and Fig. 5 represent a pressure entrance 100, and this structure can be used for detecting absolute pressure or expression pressure.Inlet 100 comprises an isolator diaphragm 102, it by 104 of screw-internal thread fit parts around, can select the environmental protection counterpart of standard when needed for use.Inlet 100 links to each other with process fluid conduit by screw thread, and the process pipeline can be the pipeline that Rosemount company used standard pipe size in its 2088 type pressure unit also can adopt reduced size, depends on the size of used isolator diaphragm 102.
Fig. 6 is the circuit diagram of pressure sensor module 112 electrical ground.Module 112 links to each other with ground at pressure entrance 116 places.Circuit path 118 runs through isolator 120, sensor 122 and circuit 124 contact or the contact pilotage up to connecting line construction 126.External circuit 128 is by contact 130 ground connection, and it generally is arranged in the power-supply device of the pulpit outside the many meters of spacing module.Part such as the current circuit that external circuit 128 generally comprises a conversion module, a 4-20 milliampere and loop control unit also links to each other with connecting line construction 126 by plug, makes current channel 118 run through module 112 and the ground connection respectively at its two ends.Two earth points 114 and 130 separated from one another on physical distance are connected with each other by the earth, metallic conduit and supporting construction thereof and ground bus etc. at electric upper edge 132 lines.In this earthed system, stray voltage may appear at physically between the earth point at interval.Lead 118 and 132 constitutes ground loops, and the stray current of direct current and 60 hertz may flow along lead 118, disturbs thereby the work of circuit 124 in the module 112 produced.
Simplifying in the circuit shown in Fig. 7 A, the structural arrangements of condenser armature 142 and 144, fixed capacity 146 and central plate 138 is represented more clearly. Condenser armature 142 and 144 and the little electric capacity of fixed condenser 146 constituted electric barrier.This barrier is represented as 152 in Fig. 7, the DC current that it can interrupt supporting between shell or hermetically-sealed construction 72A and the bus flows.The current path configuration of barrier 152 longshore current oversampling circuits and transmitter.
Fig. 8 shows the configuring condition of another kind of electric current barrier.Sensor 160 is configured among the shell or supporting construction 162 of a sealing.Isolator 163 comprises a pipe 164 that links to each other with sensor 160 and a pipe 166 that links to each other with the isolator chamber by the isolation diaphragm (not shown).Pipe 166 relative isolator diaphragms and pressure process inlet ground connection.Surround pipe 164 and 166 and form the electric current barrier with sealed insulation pipe that pipe compartment has a clearance for insulation 170.Can between isolator diaphragm and sensor 160, transmit pressure by the passage in the barrier 168 172 such as electrical isolation isolator fluids such as silicone oil.
In Fig. 9, sensor 180 have by headkerchief 184 around capacitive character or resistive foil gauge 182.Headkerchief 184 comprises metallicity matrix 186 and metal nut cap 188, and they are welded together at 190 places.Metallic matrix 186 is sealing the electrical isolation insert 192 of isolating organ pipe 194 around one, isolates organ pipe 194 and links to each other with the isolator chamber by the isolation diaphragm (not shown) again.Metal nut cap 188 is around the electrical isolation connecting line construction 196 that comprises lead-in wire 198 a plurality of leads such as grade and oil-filled sealed tube 200.Connecting line construction 196 has an insulating mounting face 204 that is used for sensor installation foil gauge 182.Be full of isolator fluids 202 such as silicone oil in the headkerchief 184, and make the isolation organ pipe 194 and the sensor 182 and 198 mutually insulateds that go between thereof of ground connection on electric.
The electric current barrier also can adopt circuit shown in Figure 1 60.Sort circuit formula barrier comprises electric isolating circuits such as transformer or optoisolator, and its concrete configuration depends on selected circuit form in the module 110 shown in Figure 6.
Figure 10 shows another embodiment of differential pressure transducer module 220.Pressure unit 222 comprises isolator diaphragm 224 (do not draw, but clear expression is arranged), differential pressure transducer 226 and line pressure sensor 228 in Fig. 2 and Fig. 3 in Figure 10.Pipeline 230 and 232 makes isolator diaphragm 224 link to each other with 228 with pressure transducer 226, is full of incompressible fluids such as silicone oil in the pipeline.Adopt two pipelines 234 (wherein one has drawn) to make transmitter 222 oil-filled and make it in the sealing of oil-filled back.Circuit 236 is configured on the circular circuit board and has the bus 238 of leading to connecting line construction 240 (invisible among the figure).Similar the above embodiment, can that integral solder forms or supporting construction 242 seal and are supporting module 220.
Figure 11 briefly shows another embodiment 250 of pressure sensor module.Isolator diaphragm 252 is configured in the threaded process fluid inlet 254.Strain pressure transducer 256 is configured in the aforesaid headkerchief.Strain pressure transducer 256 has the outlet 258 of a discharging atmospheric pressure.Circuit 260 and connecting line construction 262 are by the described configuration of other embodiment.The based on external supporting structure 264 along the line 266 of shell or sealing is welded into whole to seal its inner chamber.
Figure 12 A, 12B and 12C show the connecting line construction 300 that is used for pressure sensor module, comprise contact or contact pilotage 301 and by the kapillary 302 that stretches out in the sealed insulation wall 304.Kapillary 302 has an interior pipe 306 and internal pipe 306 end sockets that seal 308 through quenching.Under this structure arrangement,, also can guarantee the sealing and the fire prevention of the pressure sensor module that will check even in the assembling process that end socket 308 does not install.Need not test to the fire protecting performance of end socket 308 just can be installed in it on kapillary 302, because kapillary itself is exactly a fireproof.In the assembling process of pressure sensor module, kapillary is opening-i.e. not sealing.Therefore, kapillary can link to each other with the sealing or the fire protecting performance of inspection pressure sensor assembly inner chamber with the pressurization or the pressure regulating equipment of outside.After test ending, make capillary seal with end socket, finish assembling process.
Connecting line construction 300 and threaded support sleeve 312 have the superpressure intensity above can or based on external supporting structure (72 places shown in Figure 1).Isolator 304 is used for being configured in axle sleeve 312 with the non-homogeneous ring 310 that isolator 304 cooperates by support sleeve 312, thereby can guarantee its anti-pressure ability.This structure arrangement can prevent to make when overvoltage from occurring process fluid to enter the conduit that links to each other with connecting line construction 300.
The various embodiments described above only are the part possibility forms of pressure sensor module of the present invention; module of the present invention has the shell of sealing or the based on external supporting structure of sealing; pressure sensors sensitive and circuit block close and protect can be got up, make it exempt to be influenced by the adverse circumstances and physical damage.Described pressure sensor module can be used as the assembling and the protection of long period can be provided the assembly of its inside in advance of unit independently.
Though disclose most preferred embodiment of the present invention for purposes of illustration, but the people that are familiar with this gate technique can understand, under the scope and main idea of the claim that does not exceed the present invention and declared, in form and details the present invention is made that to increase, reduce and revise be possible.
Claims (19)
1. a pressure sensor module (50) comprising:
The transmitter of being formed by isolator that is suitable for the reception process fluid (54) and the pressure transducer (58) that links to each other with described isolator (54) (52);
Link to each other with described pressure transducer (58) and have a circuit (60) of bus (64), described bus (64) can be used for leading to can, the numeral output of control and pressure etc.;
Be suitable for being connected to the connecting line construction (66) of selecting external module (79), described connecting line construction (66) has the contact (68) of the bus of being connected to (64) and centers on the insulation system (70) of described contact (68); And
Monolithic molding also centers on the shell (72) of pressure transducer (58) and circuit (60), described shell (72) has the threaded process liquids inlet (56) that forms sealing with isolator (54), and be used for connecting line construction (66) is formed the threaded axle sleeve (76) that supports, described axle sleeve (76) is suitable for supporting selection external module (79), and described insulation system (70) forms sealing, described axle sleeve (76) and described shell (72) monolithic molding with the wall of contact (68) and described axle sleeve (76).
2. pressure sensor module according to claim 1 seals between wherein said shell (72) and described isolator (54) and the connecting line construction (66), thus form one can pre-install chamber.
3 pressure sensor modules according to claim 1, wherein said shell (72) are made by metal material and are had an explosion-proof ability.
4. pressure sensor module according to claim 1, wherein said shell (72) is the long tubular construction that is extended along an axial described connecting line construction (66) by described transmitter (52), wherein said circuit (60) is full of heat insulator along described axial and described transmitter (52) arranged spaced between described transmitter (52) and circuit (60).
5. pressure sensor module according to claim 1, wherein said shell (72) has the columnar cross section that is roughly that is suitable for supporting described axle sleeve (76) between described threaded process fluid inlet and threaded axle sleeve (76), the external force that acts on the described axle sleeve (76) can be transferred to threaded process fluid inlet (56).
6. pressure sensor module according to claim 1 comprises that further can stop an electric current barrier that produces DC current between described shell (72) and bus (64), the channel arrangement of described barrier along described circuit (60) to transmitter (52).
7. pressure sensor module according to claim 1, wherein said electric current barrier comprises a capacitor that is configured between described pressure transducer (58) and the circuit (60) at least.
8. as pressure sensor module as described in the claim 7, wherein said electric current barrier comprises a headkerchief with insulating mounting face, and described pressure transducer (58) just is installed on the described insulating mounting face.
9. as pressure sensor module as described in the claim 7, wherein said electric current barrier comprises an insulation tube coupling mechanism that is positioned between described isolator (54) and the pressure transducer (58).
10. as pressure sensor module as described in the claim 7, wherein said electric current barrier is configured in the described circuit (60) and further comprises these class buffer circuits such as an isolating transformer or optoisolator.
11. pressure sensor module according to claim 1, wherein said connecting line construction (66) further comprises one by the kapillary that stretches out in the described insulating material, and described kapillary has fireproof inner passage and hermetically-sealed construction thereof.
12. pressure sensor module according to claim 1, wherein said pressure transducer (58) links to each other with described isolator (54) by the incompressible fluid in described flame proof passageway, and the internal diameter of described passage has fire protecting performance.
13. as pressure sensor module as described in the claim 12, wherein said flame proof passageway is processed with spark-erosion machine tool.
14. as pressure sensor module as described in the claim 12, wherein said flame proof passageway is that capillary is tubular.
15. pressure sensor module according to claim 1, the compressive strength of wherein said connecting line construction (66) and threaded axle sleeve (76) is greater than the compressive strength of described shell (72).
16. as pressure sensor module as described in the claim 15, the non-homogeneous ring texture that cooperates with described insulation system (70) by described support sleeve (76) can guarantee the anti-superpressure ability of insulation system (70) in the axle sleeve (76).
17. pressure sensor module according to claim 1, wherein said circuit (60) is only supplied with limited electric energy described pressure transducer (58) to guarantee its operate as normal.
18. pressure sensor module according to claim 1, the wherein said external module of selecting for use comprises converter module.
19. the manufacture method of a pressure sensor module (50) comprises step:
An isolator (54) that is suitable for the reception process fluid is linked to each other with a pressure transducer (58) to constitute a transmitter (52);
A circuit (60) is coupled together with described pressure transducer (58), and described circuit (60) can provide one to be used for the bus (64) that logical energy, control and pressure on the number are represented;
Provide to be suitable for being connected to the connecting line construction (66) of selecting external module (79), described connecting line construction (66) has the contact (68) of the bus of being connected to (64) and centers on the insulation system (70) of described contact (68); And
Provide monolithic molding also to center on the shell (72) of pressure transducer (58) and circuit (60), described shell (72) has the threaded process liquids inlet (56) that forms sealing with isolator (54), and be used for connecting line construction (66) is formed the threaded axle sleeve (76) that supports, described axle sleeve (76) is suitable for supporting selection external module (79), and described insulation system (70) forms sealing, described axle sleeve (76) and described shell (72) monolithic molding with the wall of contact (68) and described axle sleeve (76).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15636999P | 1999-09-28 | 1999-09-28 | |
| US60/156,369 | 1999-09-28 | ||
| US09/519,912 | 2000-03-07 | ||
| US09/519,912 US6487912B1 (en) | 1999-09-28 | 2000-03-07 | Preinstallation of a pressure sensor module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1376260A CN1376260A (en) | 2002-10-23 |
| CN1152243C true CN1152243C (en) | 2004-06-02 |
Family
ID=26853110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008134871A Expired - Lifetime CN1152243C (en) | 1999-09-28 | 2000-09-22 | Preinstallation of a pressure sensor module |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6487912B1 (en) |
| EP (1) | EP1224447B1 (en) |
| JP (1) | JP4046508B2 (en) |
| CN (1) | CN1152243C (en) |
| AU (1) | AU4024701A (en) |
| BR (1) | BR0014362A (en) |
| DE (1) | DE60018962T2 (en) |
| WO (1) | WO2001023856A1 (en) |
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| US6901803B2 (en) * | 2003-10-02 | 2005-06-07 | Rosemount Inc. | Pressure module |
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| US7096738B2 (en) * | 2004-03-18 | 2006-08-29 | Rosemount Inc. | In-line annular seal-based pressure device |
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2000
- 2000-03-07 US US09/519,912 patent/US6487912B1/en not_active Expired - Lifetime
- 2000-09-22 DE DE60018962T patent/DE60018962T2/en not_active Expired - Lifetime
- 2000-09-22 JP JP2001527193A patent/JP4046508B2/en not_active Expired - Fee Related
- 2000-09-22 WO PCT/US2000/025997 patent/WO2001023856A1/en active IP Right Grant
- 2000-09-22 CN CNB008134871A patent/CN1152243C/en not_active Expired - Lifetime
- 2000-09-22 AU AU40247/01A patent/AU4024701A/en not_active Abandoned
- 2000-09-22 EP EP00963711A patent/EP1224447B1/en not_active Expired - Lifetime
- 2000-09-22 BR BR0014362-6A patent/BR0014362A/en not_active IP Right Cessation
Also Published As
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|---|---|
| JP4046508B2 (en) | 2008-02-13 |
| EP1224447B1 (en) | 2005-03-23 |
| DE60018962T2 (en) | 2006-04-13 |
| US6487912B1 (en) | 2002-12-03 |
| CN1376260A (en) | 2002-10-23 |
| DE60018962D1 (en) | 2005-04-28 |
| AU4024701A (en) | 2001-04-30 |
| BR0014362A (en) | 2002-06-11 |
| EP1224447A1 (en) | 2002-07-24 |
| JP2003510597A (en) | 2003-03-18 |
| WO2001023856A1 (en) | 2001-04-05 |
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